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公开(公告)号：US1202238A
公开(公告)日：1916-10-24
申请号：US1914830586
申请日：1914-04-09
Applicant: WILL H DARROW , THOMAS J BYRNE , STOKES ROBERT L
Inventor： STOKES ROBERT L
CPC classification number: F16K31/26 , Y10T137/7397
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